src/mesa/drivers/dri/sis/sis_alloc.c

   1 /**************************************************************************
   2
   3 Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
   4 Copyright 2003 Eric Anholt
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a
   8 copy of this software and associated documentation files (the "Software"),
   9 to deal in the Software without restriction, including without limitation
  10 on the rights to use, copy, modify, merge, publish, distribute, sub
  11 license, and/or sell copies of the Software, and to permit persons to whom
  12 the Software is furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice (including the next
  15 paragraph) shall be included in all copies or substantial portions of the
  16 Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21 ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
  22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24 USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27 /* $XFree86: xc/lib/GL/mesa/src/drv/sis/sis_alloc.c,v 1.7 2001/01/08 01:07:29 martin Exp $ */
  28
  29 /*
  30  * Authors:
  31  *   Sung-Ching Lin <sclin@sis.com.tw>
  32  *   Eric Anholt <anholt@FreeBSD.org>
  33  */
  34
  35 #include "sis_context.h"
  36 #include "sis_alloc.h"
  37
  38 #include "sis_common.h"
  39
  40 #include <unistd.h>
  41
  42 #define Z_BUFFER_HW_ALIGNMENT 16
  43 #define Z_BUFFER_HW_PLUS (16 + 4)
  44
  45 /* 3D engine uses 2, and bitblt uses 4 */
  46 #define DRAW_BUFFER_HW_ALIGNMENT 16
  47 #define DRAW_BUFFER_HW_PLUS (16 + 4)
  48
  49 #define ALIGNMENT(value, align) (((value) + (align) - 1) / (align) * (align))
  50
  51 static int _total_video_memory_used = 0;
  52 static int _total_video_memory_count = 0;
  53
  54 void *
  55 sisAllocFB( sisContextPtr smesa, GLuint size, void **handle )
  56 {
  57    drm_sis_mem_t fb;
  58
  59    _total_video_memory_used += size;
  60
  61    fb.context = smesa->hHWContext;
  62    fb.size = size;
  63    if (drmCommandWriteRead( smesa->driFd, DRM_SIS_FB_ALLOC, &fb,
  64       sizeof(drm_sis_mem_t) ) || fb.offset == 0)
  65    {
  66       return NULL;
  67    }
  68    *handle = (void *)fb.free;
  69
  70    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
  71       fprintf(stderr, "sisAllocFB: size=%d, offset=%lu, pid=%d, count=%d\n",
  72               size, fb.offset, (GLint)getpid(),
  73               ++_total_video_memory_count);
  74    }
  75
  76    return (void *)(smesa->FbBase + fb.offset);
  77 }
  78
  79 void
  80 sisFreeFB( sisContextPtr smesa, void *handle )
  81 {
  82    drm_sis_mem_t fb;
  83
  84    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
  85       fprintf(stderr, "sisFreeFB: free=%p, pid=%d, count=%d\n",
  86               handle, (GLint)getpid(), --_total_video_memory_count);
  87    }
  88
  89    fb.context = smesa->hHWContext;
  90    fb.free = handle;
  91    drmCommandWrite( smesa->driFd, DRM_SIS_FB_FREE, &fb, sizeof(drm_sis_mem_t) );
  92 }
  93
  94 void *
  95 sisAllocAGP( sisContextPtr smesa, GLuint size, void **handle )
  96 {
  97    drm_sis_mem_t agp;
  98
  99    if (smesa->AGPSize == 0)
 100       return NULL;
 101
 102    agp.context = smesa->hHWContext;
 103    agp.size = size;
 104    if (drmCommandWriteRead( smesa->driFd, DRM_SIS_AGP_ALLOC, &agp,
 105       sizeof(drm_sis_mem_t) ) || agp.offset == 0)
 106    {
 107       return NULL;
 108    }
 109    *handle = (void *)agp.free;
 110
 111    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
 112       fprintf(stderr, "sisAllocAGP: size=%u, offset=%lu, pid=%d, count=%d\n",
 113               size, agp.offset, (GLint)getpid(),
 114               ++_total_video_memory_count);
 115    }
 116
 117    return (void *)(smesa->AGPBase + agp.offset);
 118 }
 119
 120 void
 121 sisFreeAGP( sisContextPtr smesa, void *handle )
 122 {
 123    drm_sis_mem_t agp;
 124
 125    if (SIS_VERBOSE & VERBOSE_SIS_MEMORY) {
 126       fprintf(stderr, "sisFreeAGP: free=%p, pid=%d, count=%d\n",
 127               handle, (GLint)getpid(), --_total_video_memory_count);
 128    }
 129
 130    agp.context = smesa->hHWContext;
 131    agp.free = handle;
 132    drmCommandWrite( smesa->driFd, DRM_SIS_AGP_FREE, &agp,
 133       sizeof(drm_sis_mem_t) );
 134 }
 135
 136 void
 137 sisAllocZStencilBuffer( sisContextPtr smesa )
 138 {
 139    GLuint z_depth;
 140    GLuint totalBytes;
 141    int width2;
 142
 143    GLubyte *addr;
 144
 145    z_depth = ( smesa->glCtx->Visual.depthBits +
 146                smesa->glCtx->Visual.stencilBits ) / 8;
 147
 148    width2 = ALIGNMENT( smesa->width * z_depth, 4 );
 149
 150    totalBytes = smesa->height * width2 + Z_BUFFER_HW_PLUS;
 151
 152    addr = sisAllocFB( smesa, totalBytes, &smesa->zbFree );
 153    if (addr == NULL)
 154    {
 155       fprintf (stderr, "SIS driver : out of video memory\n");
 156       sis_fatal_error ();
 157    }
 158
 159    if (SIS_VERBOSE & VERBOSE_SIS_BUFFER) {
 160       fprintf(stderr, "sis_alloc_z_stencil_buffer: addr=%p\n", addr);
 161    }
 162
 163    addr = (GLubyte *)ALIGNMENT( (unsigned long)addr, Z_BUFFER_HW_ALIGNMENT );
 164
 165    smesa->depthbuffer = (void *) addr;
 166    smesa->depthPitch = width2;
 167    smesa->depthOffset = (unsigned long)addr - (unsigned long)smesa->FbBase;
 168
 169    /* set pZClearPacket */
 170    memset( &smesa->zClearPacket, 0, sizeof(ENGPACKET) );
 171
 172    smesa->zClearPacket.dwSrcPitch = (z_depth == 2) ? 0x80000000 : 0xf0000000;
 173    smesa->zClearPacket.dwDestBaseAddr = (unsigned long)(addr -
 174       (unsigned long)smesa->FbBase);
 175    smesa->zClearPacket.wDestPitch = width2;
 176    smesa->zClearPacket.stdwDestPos.wY = 0;
 177    smesa->zClearPacket.stdwDestPos.wX = 0;
 178
 179    smesa->zClearPacket.wDestHeight = smesa->virtualY;
 180    smesa->zClearPacket.stdwDim.wWidth = (GLshort)width2 / z_depth;
 181    smesa->zClearPacket.stdwDim.wHeight = (GLshort)smesa->height;
 182    smesa->zClearPacket.stdwCmd.cRop = 0xf0;
 183
 184    if (smesa->blockWrite)
 185       smesa->zClearPacket.stdwCmd.cCmd0 = CMD0_PAT_FG_COLOR;
 186    else
 187       smesa->zClearPacket.stdwCmd.cCmd0 = 0;
 188    smesa->zClearPacket.stdwCmd.cCmd1 = CMD1_DIR_X_INC | CMD1_DIR_Y_INC;
 189 }
 190
 191 void
 192 sisFreeZStencilBuffer( sisContextPtr smesa )
 193 {
 194    sisFreeFB( smesa, smesa->zbFree );
 195    smesa->zbFree = NULL;
 196    smesa->depthbuffer = NULL;
 197 }
 198
 199 void
 200 sisAllocBackbuffer( sisContextPtr smesa )
 201 {
 202    GLuint depth = smesa->bytesPerPixel;
 203    GLuint size, width2;
 204
 205    char *addr;
 206
 207    width2 = (depth == 2) ? ALIGNMENT (smesa->width, 2) : smesa->width;
 208    size = width2 * smesa->height * depth + DRAW_BUFFER_HW_PLUS;
 209
 210    /* Fixme: unique context alloc/free back-buffer? */
 211    addr = sisAllocFB( smesa, size, &smesa->bbFree );
 212    if (addr == NULL)
 213    {
 214       fprintf (stderr, "SIS driver : out of video memory\n");
 215       sis_fatal_error ();
 216    }
 217
 218    addr = (char *)ALIGNMENT( (unsigned long)addr, DRAW_BUFFER_HW_ALIGNMENT );
 219
 220    smesa->backbuffer = addr;
 221    smesa->backOffset = (unsigned long)(addr - (unsigned long)smesa->FbBase);
 222    smesa->backPitch = width2 * depth;
 223
 224    memset ( &smesa->cbClearPacket, 0, sizeof(ENGPACKET) );
 225
 226    smesa->cbClearPacket.dwSrcPitch = (depth == 2) ? 0x80000000 : 0xf0000000;
 227    smesa->cbClearPacket.dwDestBaseAddr = smesa->backOffset;
 228    smesa->cbClearPacket.wDestPitch = smesa->backPitch;
 229    smesa->cbClearPacket.stdwDestPos.wY = 0;
 230    smesa->cbClearPacket.stdwDestPos.wX = 0;
 231
 232    smesa->cbClearPacket.wDestHeight = smesa->virtualY;
 233    smesa->cbClearPacket.stdwDim.wWidth = (GLshort) width2;
 234    smesa->cbClearPacket.stdwDim.wHeight = (GLshort) smesa->height;
 235    smesa->cbClearPacket.stdwCmd.cRop = 0xf0;
 236
 237    if (smesa->blockWrite)
 238       smesa->cbClearPacket.stdwCmd.cCmd0 = (GLbyte)(CMD0_PAT_FG_COLOR);
 239    else
 240       smesa->cbClearPacket.stdwCmd.cCmd0 = 0;
 241    smesa->cbClearPacket.stdwCmd.cCmd1 = CMD1_DIR_X_INC | CMD1_DIR_Y_INC;
 242 }
 243
 244 void
 245 sisFreeBackbuffer( sisContextPtr smesa )
 246 {
 247    sisFreeFB( smesa, smesa->bbFree );
 248    smesa->backbuffer = NULL;
 249 }